Steam-generator.



No. 863,552 PATENTED AUG. 13, 1907.

A. NEUENSGHWANDER.

STEAM GENERATOR. APPLICATION FILED MAY 4. 1906.

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- v PATENTED AUG.13, 1907. A. NEUENSOHWANDER.

STEAM GENERATOR. APPLICATION FILED MAY 4. 1906.

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attozmuf ARNOLD NEUENSGHWANDER, OF LOUISVILLE, KENTUCKY.

STEAM-GENERATOR.

Specification of Letters Patent.

Patented Aug. 13, 1907.

Application filed May 4,1906. Serial No. 315,209.

To all whom it may concern:

Be it known that ARNOLD Nnonxscnwannnn, a citizen of United States ofAmerica, residing at Louisfille, in the county of Jefferson and State ofKentucky, has invented certain new and useful Improvements in RapidSteam-Generators; and he does hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame. I

This invention relates to steam generators and has for an object toprovide a generator embodying improved means for rapidly generatingsteam from a given quantity of water.

A further object of the invention is to provide a steam generatorprimarily adapted for use in fire engines and similar structures,andeinbodying improved means for presenting a thin film of water to thedirect action of the heat.

A further object of the invention is to provide means whereby a columnof water within the steam generator is subjected to heat both internallyand externally.

With these and other objects in view, the invention comprises certainnovel constructions, combinations and arrangements of parts, as will behereinafter fully described and claimed.

In the accompanying drawings :'Figure l is a view in vertical section ofa boiler embodying the present invention, showing the steam generatingtubes in side elevation. Fig. 2 is a top plan view of the steamgenerating tubes with the top of the boiler and steam dome removed. Fig.3 is an inverted plan view of the steam generating tubes and theirconnections with the fire pot and ash pit removed. Fig. 4 is a detailview in side elevation partly broken away of one set of manifold tubesarranged in accordance with the present invention.

Like characters of reference designate corresponding parts throughoutthe several views.

The present invention is adapted for association with boilers of anyusual and approved form shown herein diagrammatically, as an uprightboiler with an outer shell 10 and a spaced inner shell 11 forming aninterval between the shell and sleeve for the receipt and accommodationof a small quantity of water and with the usual space at the top of toact as a steam dome. Within the sleeve 11 are mounted a plurality ofmani fold tubes embodying a pair of outer tubes 12 arranged inparallelism adjacent each other and having their opposite ends securedin any usual and approved manner in the adjacent sides of headers 13 and14 at the top and bottom respectively. The headers 13 and 14 areconstructed hollow, whereby chambers 15 and 16 are respectively formedin the said headers, and the tubes 12 are connected with said headers insuch mannor that the extremities of the saidtubes are in communicationwith the said chambers 15 and 16. The headers 13 and 14 are alsoprovided with openings at their opposite sides smaller than andconcentric with the tubes 12. Through the registering openings in theopposite sides of the headers 13 and 14 the tube 17 is inserted,provided at its lower end with screw threads 18, whereby the lowersurface of the lower header is engaged; and the upper end of the tube 17is expanded as at 19 in the usual manner to form a water-tight jointwith the upper surface of the upper header. From Fig. 4 it will beobvious that the outer tubes 12 form communication between the chambers15 and 16 and that the interior tubes 17 extend longitudinally throughthe said tubes 12 and axially thereof, and are open at their oppositeends externally of the headers. The headers 13 and 14 are providedcentrally with nipples 20 and 2]., respectively, whereby the severalmanifold units, as shown in Fig. 1, are connected together by anyapproved means, as by the pipes 22 at the top and pipes 23 at thebottom, similar pipes 24 and 25 being provided for connecting the saidassociated manifold units with the inner sleeve of the boiler.

The manifold units, as shown in Fig. 4, may be severally connectedtogether in any approved manner, the manner of connecting shown in Figs.2 and 3 being but diagrammatical or conventional and providing a simplemeans whereby the said units may be arranged in parallelismlongitudinally within the sleeve of the boiler. The pipes 24 extendingthrough the sleeve of the boiler are preferably extended adjacent to theinner surface of the outer shell and are divided longitudinally as at26, whereby a half sleeve is provided curved from the top of theextending end to direct the steam issuing from the said pipes to aproper distribution about the steam dome.

In a steam generator, the combination of a boiler formed with a fluidcontaining space, a plurality of clusters of water tubes arranged withinthe boiler, an independent header at each end of each of the clusters ofwater tubes. each of said headers being provided upon one side withopenings to receive the ends of the water tubes which open internally ofthe headers, and upon the opposite sides with openings smaller than andconcentric with the before mentioned water tube receiving openings,ilucs passing through the water tubes and having their ends inserted inthe before mentioned openings upon the opposite sides of the headers, anipple carried by each header, and fluid conductors connected to thenipples and establishing communication between the headers and the fluidcontaining space in the boiler.

In testimony whereof I afiix my signature in presence of two witnesses.

ARNOLD NEUENSCHWANDER.

Witnesses FRED FORCHT, .Tr., P. J. Cosonovn.

